RAND()

Overview

A description for this Function has not yet been added to this Documentation.

See also: Functions in 10.6 ES, in 10.6 CS, in 10.5 ES, in 10.5 CS, in 10.4 ES, in 10.4 CS, in 10.3 ES, in 10.3 CS, in 10.2 ES, and in 10.2 CS

EXAMPLES

This generates a random value that ranges from 0 to 5, including 0 but not including 5:

SELECT RAND()*5; -- 1st call
+--------------------+
| RAND()*5           |
+--------------------+
| 1.5705801188671775 |
+--------------------+
SELECT RAND()*5; -- 2nd call
+--------------------+
| RAND()*5           |
+--------------------+
| 4.6110827425598012 |
+--------------------+
CREATE TABLE t (i INT);
INSERT INTO t VALUES (1), (2), (3);
-- Using a seed (5) makes the random sequence repeatable.
SELECT i, RAND(5) FROM t; -- 1st call
+------+---------------------+
| i    | RAND(5)             |
+------+---------------------+
|    1 | 0.40613597483014313 |
|    2 |  0.8745439358749836 |
|    3 | 0.15431178561813363 |
+------+---------------------+
SELECT i, RAND(5) FROM t; -- 2nd call
+------+---------------------+
| i    | RAND(5)             |
+------+---------------------+
|    1 | 0.40613597483014313 |
|    2 |  0.8745439358749836 |
|    3 | 0.15431178561813363 |
+------+---------------------+
SELECT * FROM t ORDER BY RAND(); -- 1st call
+------+
| i    |
+------+
|    2 |
|    1 |
|    3 |
+------+
SELECT * FROM t ORDER BY RAND(); -- 2nd call
+------+
| i    |
+------+
|    1 |
|    3 |
|    2 |
+------+

CHANGE HISTORY

Release Series

History

10.6 Enterprise

  • Present starting in MariaDB Enterprise Server 10.6.4-1.

10.6 Community

  • Present starting in MariaDB Community Server 10.6.0.

10.5 Enterprise

  • Present starting in MariaDB Enterprise Server 10.5.3-1.

10.5 Community

  • Present starting in MariaDB Community Server 10.5.0.

10.4 Enterprise

  • Present starting in MariaDB Enterprise Server 10.4.6-1.

10.4 Community

  • Present starting in MariaDB Community Server 10.4.0.

10.3 Enterprise

  • Present starting in MariaDB Enterprise Server 10.3.16-1.

10.3 Community

  • Present starting in MariaDB Community Server 10.3.0.

10.2 Enterprise

  • Present starting in MariaDB Enterprise Server 10.2.25-1.

10.2 Community

  • Present starting in MariaDB Community Server 10.2.0.

EXTERNAL REFERENCES